He set a time limit for withdrawal of most American troops from Iraq, while increasing the number of troops in Afghanistan.

VOA: special.2009.05.02

If you eat food for a long time and then you stop, let's say a high sugar diet or something and withdrawal symptoms occur, well that might mean addiction is occurring.

如果你长期吃某种食物,一旦停止食用,例如高糖饮食之类,就会出现戒断反应,这也许说明你已经上瘾了

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选